含稀土La的C-Mn-Al-P系TRIP钢高温变形抗力模型研究
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摘要
通过热模拟机对TRIP钢进行热处理,获得形变和应力之间的关系数据。然后分析其可能造成这种结果的机理性原因,并计算其本构方程。结果表明:TRIP钢的整体流变应力曲线中硬化机制与软化机制能很快达到动态平衡,峰值不明显,与稳定流变应力相当;高温可很快降低TRIP钢的应力,高速率可增加其应力。
The trip steel was heat-treated by thermal simulator. The relationship data of deformation and stress was gotten. Then, the rational reason which can cause the results was analyzed. At the same time, the constitutive equations were calculated. The results show that the overall flow stress curve of trip steel hardening and softening mechanism can achieve a dynamic balance soon, the peak value is not obvious, which is equal to steady flow stress; higher temperature can quickly decrease the stress of TRIP steel, while higher speed increases the stress value.
The trip steel was heat-treated by thermal simulator. The relationship data of deformation and stress was gotten. Then, the rational reason which can cause the results was analyzed. At the same time, the constitutive equations were calculated. The results show that the overall flow stress curve of trip steel hardening and softening mechanism can achieve a dynamic balance soon, the peak value is not obvious, which is equal to steady flow stress; higher temperature can quickly decrease the stress of TRIP steel, while higher speed increases the stress value.
引文
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[4]闫翠,李麟,符仁钰,等.TRIP钢的研究进展[J].上海金属,2008,30(4):40-44.
[5]王晓东,王利,戎咏华.TRIP钢研究的现状与发展[J].热处理,2008,23(6):8-19.
[6]魏猛,陈海涛,郎宇平,等.316LN不锈钢动态再结晶研究[J].热加工工艺,2012,41(14):97-101.
[7]张勇明,白月香.低碳钢变形奥氏体动态再结晶行为及组织演变[J].热加工工艺,2012,41(04):45-48.
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[11]Mc Queen H J,Yue S,Ryan N D,et al.Hot working characteristics of steels in austenitics state[J].J Mater Process Technol,1995,53(1/2):293-310.
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[13]Sellars C M,Tegart W J M.On the mechanism of hot deformation[J].Act Metallurgical,1996,14(9):1136-1138.
[14]Zener C,Hollomon H.Effect of strain-rate upon the plastic flow of steel[J].Appl Phys,1944,15(1):22-27.
[15]蔺永诚,陈明松,钟掘.42Cr Mo钢的热压缩流变应力行为[J].中南大学学报,2008,39(3):449-553.
[2]徐光,徐楚韶,赵嘉蓉,等.超低碳IF钢铁素体动态再结晶研究[J].钢铁,2006,41(6):63-66.
[3]熊家强,谢刚,唐广波.304不锈钢热变形过程奥氏体动态再结晶及流变应力研究[J].云南冶金,2008,37(5):37-42.
[4]闫翠,李麟,符仁钰,等.TRIP钢的研究进展[J].上海金属,2008,30(4):40-44.
[5]王晓东,王利,戎咏华.TRIP钢研究的现状与发展[J].热处理,2008,23(6):8-19.
[6]魏猛,陈海涛,郎宇平,等.316LN不锈钢动态再结晶研究[J].热加工工艺,2012,41(14):97-101.
[7]张勇明,白月香.低碳钢变形奥氏体动态再结晶行为及组织演变[J].热加工工艺,2012,41(04):45-48.
[8]王有铭,李曼云,韦光.钢材的控制轧制和控制冷却[M].北京:冶金工业出版社,2009:13-27.
[9]Mc H J,Yue S,Ryan N D,et al.Hot working characteristics of steels in austenitic state[J].Mater Process Technol,1995,53(1/2):293-310.
[10]Shi H,Mclaren J,Sellars C M,et al.Constitutive equations for high temperature flow stress of aluminum-alloys[J].Mater Sci Technol,1997,13(3):210-212.
[11]Mc Queen H J,Yue S,Ryan N D,et al.Hot working characteristics of steels in austenitics state[J].J Mater Process Technol,1995,53(1/2):293-310.
[12]Shi H,Mclaren A J,Sellars C M,et al.Constitutive equations for high temperature flow stress of aluminum alloys[J].Mater Sci Technol,1997,13(3):210-216.
[13]Sellars C M,Tegart W J M.On the mechanism of hot deformation[J].Act Metallurgical,1996,14(9):1136-1138.
[14]Zener C,Hollomon H.Effect of strain-rate upon the plastic flow of steel[J].Appl Phys,1944,15(1):22-27.
[15]蔺永诚,陈明松,钟掘.42Cr Mo钢的热压缩流变应力行为[J].中南大学学报,2008,39(3):449-553.